A PHP Error was encountered

Severity: Notice

Message: Trying to get property 'id' of non-object

Filename: models/Model.php

Line Number: 183

Backtrace:

File: /home2/kelolase/demo.kelolasekolah.com/application/models/Model.php
Line: 183
Function: _error_handler

File: /home2/kelolase/demo.kelolasekolah.com/application/controllers/Login.php
Line: 15
Function: GetActiveTahunAjaran

File: /home2/kelolase/demo.kelolasekolah.com/index.php
Line: 317
Function: require_once